Exam-style question
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Which statement best describes a rational number?.
- A.A number that can be written as a fraction, or ratio, of two integers
- B.A number that cannot be written as a fraction
- C.A number that is always greater than zero
- D.A number that must be written as a whole number
Model answer
What a good answer should say
- A number that can be written as a fraction, or ratio, of two integers
Explanation
Why this works
A rational number is a number that can be written as a fraction or ratio of integers.
Common mistake
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